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/* -*-c++-*-
*
* $Id: XDisplay.cc,v 1.2 2003/02/12 18:06:19 dairiki Exp $
*
* Copyright (C) 2003 Geoffrey T. Dairiki
*
* This file is part of Pyxine, Python bindings for xine.
*
* Pyxine is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* Pyxine is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#pragma implementation
#include "XDisplay.h"
BEGIN_PXLIB_NAMESPACE
class XDisplayLock
{
Display * display;
public:
XDisplayLock(Display * _d) : display(_d) { XLockDisplay(display); }
~XDisplayLock() { XUnlockDisplay(display); }
};
////////////////////////////////////////////////////////////////
XDisplay::XDisplay (const char * display_name)
: name(XDisplayName(display_name))
{
static bool seen = false;
if (!seen) {
if (!XInitThreads())
throw Error("Your Xlib doesn't support threads?");
seen = true;
}
display = XOpenDisplay(name.c_str());
if (!display)
throw Error("Can't open display");
}
XDisplay::~XDisplay ()
{
//FIXME:cerr << "XDisplay destroy" << endl;
XDisplayLock lock(display);
XCloseDisplay(display);
//FIXME:cerr << "XDisplay destroyed" << endl;
}
Bool
XDisplay::pick_any_event (Display *, XEvent *, XPointer)
{
return True;
}
bool
XDisplay::get_event (XEvent * e)
{
XDisplayLock l(display);
return XCheckIfEvent(display, e, pick_any_event, 0);
}
void
XDisplay::next_event (XEvent * e)
{
pthread_testcancel();
while (! get_event(e)) {
int fd = ConnectionNumber(display);
fd_set rfds;
FD_ZERO(&rfds);
FD_SET(fd, &rfds);
fd_set efds = rfds;
select(fd+1, &rfds, 0, &efds, 0);
pthread_testcancel();
}
}
int
XDisplay::get_screen_number_of_window (Window w)
{
XWindowAttributes attr;
XDisplayLock xlock(display);
if (!XGetWindowAttributes(display, w, &attr))
throw Error("XGetWindowAttributes failed");
return XScreenNumberOfScreen(attr.screen);
}
double
XDisplay::get_pixel_aspect(int screen)
{
XDisplayLock lock(display);
double res_h = ( (double)DisplayWidth(display, screen)
/ DisplayWidthMM(display, screen));
double res_v = ( (double)DisplayHeight(display, screen)
/ DisplayHeightMM(display, screen));
return res_v / res_h;
}
WindowGeometry
XDisplay::get_window_geometry(Window w)
{
WindowGeometry g;
Window _window;
unsigned width, height, _border_width, _depth;
XDisplayLock lock(display);
if (!XGetGeometry(display, w,
&_window,
&g.x0, &g.y0, &width, &height,
&_border_width, &_depth))
throw Error("XGetGeometry failed");
g.width = width;
g.height = height;
int screen = get_screen_number_of_window(w);
g.pixel_aspect = get_pixel_aspect(screen);
return g;
}
WindowGeometry
XDisplay::get_window_geometry(const XConfigureEvent& e)
{
WindowGeometry g;
g.width = e.width;
g.height = e.height;
if (e.display != display)
cerr << "Warning: event.display != display" << endl;
#if 0
// This doesn't seem to work...
g.x0 = e.x;
g.y0 = e.y;
#else
Window tmp_win;
XDisplayLock lock(e.display);
XTranslateCoordinates(e.display, e.window, DefaultRootWindow(e.display),
0, 0, &g.x0, &g.y0, &tmp_win);
#endif
int screen = get_screen_number_of_window(e.window);
g.pixel_aspect = get_pixel_aspect(screen);
return g;
}
void
XDisplay::select_input(Window w, long event_mask)
{
XDisplayLock xlock(display);
XSelectInput(display, w, event_mask);
}
int
XDisplay::get_ShmCompletionEvent_type() const
{
static int SHM_COMPLETION = 0;
if (SHM_COMPLETION == 0) {
SHM_COMPLETION = XShmGetEventBase(display) + ShmCompletion;
}
return SHM_COMPLETION;
}
END_PXLIB_NAMESPACE
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